I believe dmd is only compatible with gdb 7.5. Likewise gdc-4.7 iscompatible with 7.5, but not 7.6 (you should use gdc-4.8 or the development branch if you want gdb to work properly).For dmd, someone needs to fix dmd to work with gdb-7.6.
How is that? Did they drop support for DWARF2? Do we have a bug report for this?